Nipple extractor or puller tool



Dec. 3, $40. M. KALBECK NIPPLE EXTRACTOR OR FULLER TOOL Filed Nov. 22,1937 2 Sheets-Sheet l Dec. 3, 1940. KALBECK 2,224,031

NIPPLE EXTRACTOR OR FULLER TOOL Filed Nov. 22, 1937 2 Sheets-Sheet 2Patented Dec. 3, 1940 UNITED STATES- NIPPLE .EXTRACTOR oarUnLEa'rooLMartin Kalbeck, Buffalo, N. .Y;, assignor to Crane 00., Chicago, Ill.,acorporation oflllinois Application November 22, 1937, Serial No. 175,808

1 Claim. (01. 2988L2) My invention relatestothatitype of tool useful inthe removal of internally positioned radiator nipples'commonlyreferredto as push nipples, the latter functioning to assemble.individual heating 5 boiler or radiator sections in pressure-tightrelation.

Heretofore, it hasibeen a diflicult and relatively expensive operationto remove the push nipples from the radiator sections. during the courseof the disassembly thereof. The prevailing practice has been to removethem by means of hammer and chisel, and frequently such practice hasobviously resulted in damage to the nipple or to the section itself tosuch extent that either or 151.1 both were not thereafter useabl-e.Realizing that boiler and radiator sections are expensiveto replace, theobjection to these prior relatively harsh methods of removal of the pushnipples has been serious, but apparently no practical method of..removal overcoming these objections; has been devised prior to myinvention.

It is therefore one of the principal objects of my invention toprovide'a more improved method of removing push nipples and the like,resulting in the rapid extraction of the nipple without injury either tothe radiator section or, to. the.

nipple.

Another object has for itspurpose to provide a tool of this character inwhich the component parts of the tool are assembled and held together ina compact and relatively. easily operable arrangement. a Anotherimportant object lies in the provision for a simple tool in which thenipple may be removed quickly by simple manipulation by relativelyunskilled labor withoutfear of injury either to the user or to thematerial. to which the tool is. applied. 7

Another important advantage lies in providing a tool of the characterhereinafter described embodying the feature of closing, or contractingthe nipple chuck or puller portion of the tool in order to remove thenipple easily from the tool after the latter has been dislodged or freedfrom the 5 normal tapered peripheral contact with the casting.

Other objects and advantages will become more readily apparent uponreferring to the specification inconnection with the accompanying draw-50 ings, in which preferred embodiments are disclosed and in which Fig.1 is an assembly view showing the tool applied to a radiator section andthe like and wherein the push nipple is about to be removed,

55 but in which the users force to the tool hasv not yet been exercised.

Fig. 2 is a View similar to that disclosed in Fig. 1, except thatinthis. view the nipple is shown as virtually withdrawn from theradiator section so after the necessary manual force has been ap- Fig. 3is: a'fragmentary sectional view showing the arrangement of the internalparts at the head or working end of the extractor tool with thebifurcated jaws of the nipple chuck being shown in the position assumedbefore the nipple has been withdrawn from the radiator section.

Fig. 4 is afragmentary exterior View of the tool.

Fig. 5 is a fragmentary sectional view similar to that described inconnection with Fig. 3, except that the bifurcated jaws of the nipplechuck are. shown in. the position assumed after the nipple. has beenwithdrawn from the radiator section.

Fig. 6 is an exterior end view of the tool described in Fig. 5.

. Fig. 7 is amodified form of the tool shown in partially fragmentarysection.

I Fig. 8 is an exteriorside view of the modified form of tool referredto in connection with Fig. 7.

Similar reference characters refer to similar parts throughout theseveral views.

Referring now to Fig. 1, the radiator or boiler section is generallydesignated as A and, as is commonly known to those skilled in the art,the individual boiler or radiator sections are assembled one With theother by means of the tapered push nipples generally referredto as B,making a pressure-tight contact with the walls of a similarly taperedaperture in the section, as indi- I cated.

Thetool consists essentially of three parts, that is a pivotable handleportion It having a bifurcated head and generally designated as I, ananvil or bridge member 2, and a divided nipple chuck comprising a pairof suitably shouldered pulling members 6. The anvil member 2 isconnected in a manner hereinafter described in greater detail to theformer by means of the flat plates 3, which are afiixed to each side ofthe anvil member 2 by the machine screws 4. Obviously, the flat plates 3may be made integrally with the anvil or bridge member 2 withoutnecessitating a substantial change in structure. J ournalled for aportion of its length within the bridge member 2 and extending throughthe aperture 5 thereof, the divided pulling members 6 are pivotallyconnected to the bifurcated head member I by means of the hinge pin 1,the said such connection within an arcuately extending groove II,following closely the turning radius determined by the cam surfacehereinafter described in greater detail.

The anvil or bridge member 2 is preferably provided with a hollowcylindrically-formed chamber I2 which is made sufficiently large and ofsuch shape so as to easily permit the entrance of the selected size andform of push nipple B sought to be removed. Obviously, the anvil member2 may be made interchangeable and readily renewable so as to accommodatea variety of sizes of anvils with the same tool. The transverse edge andcorner of the head I is provided with a multi-directional extendingcurved surface I 3 which functions as a cam eccentrically positionedwith respect to the pivotal axis established by the pin 1 whereby uponmovement of the handle IIJ downwardly to the position shown in Fig. 2,the surface I3 bears against the oppositely disposed surface I5 upon themember 2. For the purpose of holding the nipple securely against axialmovement, the divided members 6 are provided with flanged or shoulderedends I4 and over which the nipple must be slipped before the extractionthereof from the section can be accomplished.

The groove II, it will be noted, extends directionally so that at allpoints it runs parallel to the cam surface I3, and is also madesufiiciently wide so that the pin 9 will not drag or bind upon the sideWalls of the groove.

In describing the operation of extracting a push nipple, let it beassumed that the nipple is mounted with relation to theradiator sectionA as shown in Fig. 1. The pulling members 6 are drawn together orcompressed against the action of the spring 8 and are inserted as a unittogether through the inner bore or aperture of the ;nipple B, theshoulders i4 bearing against the inner walled periphery of the saidaperture by the contact eifected by the flanges I 4. In the course ofinsertion, upon reaching the end of the nipple port or aperture markingalso the limits of the inner portion of the radiator section A, the

flanges I A will emerge from the aperture of the nipple B and therebycause the flanges to be sprung outwardly due to the action of the spring8. By this means, the nipple is gripped at the end portion of the saidaperture as more clearly shown in Fig. 1. Upon such end grip beingobtained, the handle Id of the member I is now moved downwardly and thecam surface I3 immediately commences to make a sliding contact againstthe surface I5 of the anvil 2. Since the distance between the center ofthe pin 1 and the cam surface I3 is constantly increasingthe continuedmovement of such handle downwardly thereupon causes the bifurcatedmembers 6 bearing against the end of the nipple B to be pulled forwardor withdrawn in view irof being slidably journalled within the aperture5.

Since the bridge member 2 bears rigidly against the outer portion of'theradiator section A :adjaoent the nipple aperture, the push nipple Bisdislodged from its tapered contact with the section, and thereuponcontinues to move axially with the pulling members 6 until ultimately,as

shown more clearly in Fig. 2, the flanged ends I4 together with thenipple B pass within the tapered aperture of the radiator section Ato-the position in Fig. 2, at the end of which travelthe handle of thepivoted member I has-traveled substantially through an arc of 90 degreeswhich travel, of course, may be varied. The nipple is now ready to beremoved from the tool itself, and this is accomplished by simplycompressing or forcing the pulling members 6 together against the actionof the spring, since the nipple which has now become dislodged from thesection A may be easily slipped over the shoulders I4 and thus removedfrom the tool. For the constructions illustrated in Figs. 1 to 6inclusive, the pin 9 by its travel in the grooves II aids merely inguiding the assembled pivotal movement of the bridge member 2 upon thecam-like surface I 3 with relation to the bifurcated head I.

Referring now to the modified structures shown in Figs. 7 and 8,'in thisconstruction a pivotal pin I similarly is mounted within a bifurcatedmember I and upon which the divided members 6 are likewise journalled.In this more simple type of construction, the bridge member 2 islikewise provided with a hollow cylindrical chamber I2 and bears againstthe upper portion thereof by means of the cam surface I3, allowing forthe closing together of the bifurcated members-6 by means, of thebearing efiected Within the aperture. 5. Thus when the handle It ismoved arcuately downward, pivoting upon the hinge pin 1 and confiningits entire end thrust against the upper surface I5 ofthe anvil member 2,the'cam surface I3, for the same reason mentioned in connection withFigs. 1 to 6 inclusive, causes the divided pulling members 6 to beextracted and pulled within the aperture 5. This movement simlarlycauses .an axial movement of the nipple outwardly or away from thesection A so as to thereupon displace the nipple B, as described inconnection with Figs. 1 and 2. In this modified construction it will benoted that the guiding groove II and the'guiding plates 3 are dispensedwith, although the mode of operation resulting in extraction does notdiffer substantially from that result described in Figs. 1 and 2.

It will be obvious to those skilled in this art that numerousmodifications may be made within the spirit of my invention, and Idesire, therefore, tobe limited only to the extent or the appendedclaim.

I claim:

An extracting tool comprising an operating lever, a pair of shoulderedend pulling members in spacedapart relation, a bridge membersubstantially enclosing the said pulling members, the said lever havinga bifurcated head pivot-ally attached to the said pulling members at theends opposite the said shoulders, a pair of lates secured to oppositesides of the said bridge member, the said plates having'cantilever endsadjacent the said head and projecting in a plane parallel to the pivotalplane of the said head, a groove in the said head adjacent eachcantilever end of the said plates, a guide pin carried by the saidcantilever end'of each of the said plates, the

, said guide pin projectingtransversely into the MARTIN KALBECK.

